Question

Fungsi di definisikan dengan rumus f(x)=4x-6 diketahui daerah asal {x / -3 < x < 4, x E bilangan bulat}
tentukan a. domain,kodomain dan range
b. himpunan pasangan berurutan

Answer 1

F(x)=4x-6
daerah asal(domain) = {x| -3<x<4, x ∈bilangan bulat}
                             = {-2,-1,0,1,2,3}
f(-2) = 4(-2)-6 = -8-6 = -14
f(-1) = 4(-1)-6 = -4-2 = -10
f(0) = 4.0-6 = 0-6 = -6
f(1) = 4.1-6 = 4-6 = -2
f(2) = 4.2-6 = 8-6 = 2
f(3) = 4.3-6 = 12-6 = 6
daerah kawan (kodomain) = {-14,-10,-6,-2,2,6}
daerah hasil/range = {-14,-10,-6,-2,2,6}

pasangan berurutan = {(-2,-14),(-1,-10),(0,-6),(1,-2),(2,2),(3,6)}